Thermo-electric generator



(N0 Mddel.)

H. B. 00X. THERMO ELECTRIC GENERATOR.

351 A 7:8 GH 14mg ym-incAmie (C Q m UNITED. STATES PATENT OFFICE.

sunny 'BARR NGER cox, OF HARTFORD, connsc'r'i'cnr.

TH'ERMO-ELECTRl-G GENERATOR.

srncmoariox formingput of ne new rm 434,500, dated August 19, 1890,. IApplication filed June 18, 1890- Berlal No. 965,800- (No model.)

To all whom it may concern.-

-Be itknowh thatI, HARRY BARRINGER Cox, of Hartford, in the countyiofHartford and State of Connecticut, have invented certain new and usefulImprovements in Ther'm'o Elec ric Generators; and I do hereby declare--.that the following, is a full, clear, and exact description of theinvention,which will enable others skilled in the art top'hich itappertains to make and use the same,. reference being had to theaccompanying drawing, and to the letters and figures of reference markedthereon, which form part of this specification.

This invention relates to certain improvements in thermo-electricgenerators.

The ohject'of the invention is to improve the construction oftheme-electric generators, part icularly to'increase the heating-surfacethereof.

These objects are accomplished by,-and this invention consists in,certain novelfeatures of construction, and in combinatijons of partsmore fully described hereinafter, and particularly pointed out in theclaims.

The accompanying drawing represents a plan of a'pile.

This invention is an improvement on the generator of my application forthermo-elec- Y tric generators, dated January 9,1890,Serial- No 336,339,wherein the pile is composed of a seriesof rings laid one on the other,with in-' sulating' material 'between the rings, being clamped togetherto form a tight cylinder, each ring being composed of a series ofcouples unitedtogether, and all the rings being electrically connectedin one circuit. A fire-pot or other source of heat is located at one endof the cylindrical pile, and the-interior of the pile-subject to theheatof the fire and formed by the inner ends of the elements, is coatedwith fire-proof cement or other suitable material.

In the drawing, a and 5 indicate the unlike elements of each couplecomposing the ring shown, all connected in the one circuit, as shown,andhaving terminals 1 2. Each large element is provided with 'oneor-more .con-

dnctors or radiators c,-electrically connected with thesame between'thehot and cold junctions thereof and extending out in the direction ofthe, cold junctions. The inner ends, j

of the elements are coated with fire-proof. cement d or other suitablematerial. -It should be observed that the inner ends of these couples orelements are so shaped and placed together that it enables me to so coatthe same with cement'that the interior of the cylinder forms alongitudinally fluted orcorrugated cylinder, asshown, ingbeveled off onone side of its inner end, as shown, so that the grooves or corrugationseextend in between the ends of the adjoineach large element be-' ingcouples. This corrugated or fluted surface very materially improves thedraft and exposes to the heated products of combustion a much largersurface for the absorption of the heat.

In practice in the construction of a generaior, as herein described, aseries of rings,

, such as illustrated, are piled one on the other and, separated bysuitable insulating niateg rial and firmly bound'together. The interiorsurface and spaces betweenthe elements is walled up with some fire-proofcement or clay. In coating the face of the generator at sufl icientthickness of cement is applied; but it is aimed to follow the outline ofthe interior as originally formed. After this cement has been placed, asdescribed, it is allowed to set or harden; then a slow heat is applied,and finally a high temperature which has the effect of vitrifying thesame, and making a hard, compact, and fireproof coating for theintellOl'; 5

The conductors cproduce a fall in thermic potential in the circuit. Itis evident that various slight changes might-lee made in the form andarrangement of the parts described without departing from the spirit andscope of my invention; hence I do'not wish to limit myself to theprecise construction. herein set forth. What I claimis Y 1. Athermo-electric generator having its surface exposed to the heat coatedwith fireproof material and fluted, corrugated, or other wise irregular,substantially as and for the out. or clay, substantially as described.

3. cylindrical thermo-pile having its inner surface coated with fireandfluted longitudinally,

4. A thermo-electric generator having the inner gun-face of the couplesembedded in or -5 eoated'with fire-proof ma ductors or radiators in thei ng oatwardlyfrom said 00 hot and'eold junctions t thermic potential,snbsta proof m ate j'ial as set forth-J circuit and extend uples betweentheir 0 produce a {all in ntially as described.

terial, and the'con- Q In tosti lnon my own Iafix Wltnessebi O. E.DUFFY,

C. M.-Wmm.i:.

HARRY BARRINGER COX.

y that I eiaim the foregoing as no

